states must make a priority of helping reduce demand in this country. >> the united states can focus on drug treatment and prevention. >> absolutely. i agree with that. >> reporter: if anyone should know, it's judge giselle pollack. she presides over drug court in broward county, florida. the idea, get clean, you may not a perfect record. pollack says drug courts ought to be a priority for the candidates, because they reduce drug dependency and save taxpayers millions. &she's g and she's got the numbers to back it up. a study showed pollack's court saved the county as much as $30 million a year over a five-year period. basically, the difference in the cost of treatment and counseling versus incarceration. >> if we can keep them out of the critical justice system at this level, then we will save billions and billions in prison costs. >> reporter: for the white house, it's a multi-layered approach. focus on education and prevention, treat drugs and addiction as a public health issue, not just a criminal justice concern. law enforcement continues choking off the supply. this year, the f